package Controler;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.ArrayList;

import javax.jms.Session;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import Information.Admin;
import Model.AdminDAO;

public class loginAdmin extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public loginAdmin() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
		HttpSession session = request.getSession();
		PrintWriter out = response.getWriter();
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		if(username == null)
			out.print("<script>alert('please input username');window.location.href='admin.jsp';</script>");
		else if(password==null)
			out.print("<script>alert('please input password');window.location.href='admin.jsp';</script>");
		else
		{
//				ArrayList<UserInfo> arrayList =  new ArrayList<UserInfo>();
				AdminDAO adminDAO = new AdminDAO();
				Admin admin = new Admin();
				try {
					admin = adminDAO.FindAdmin(username);
				} catch (ClassNotFoundException | SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				if(admin.getAdminUser()==null)
					out.print("<script>alert('there is no this user');window.location.href='admin.jsp';</script>");
				else if(!admin.getAdminPassword().equals(password))
					out.print("<script>alert('password error!');window.location.href='admin.jsp';</script>");
				else 
				{
					session.setAttribute("username",admin.getAdminPassword());
					session.setAttribute("AdminNO",admin.getAdminNO());
					session.setAttribute("username",admin.getAdminName());
					session.setAttribute("utype","admin");
					out.print("<script>alert('login successfully!');window.location.href='admin.jsp';</script>");
				}
			
			}
		out.flush();
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doGet(request, response);
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
